CITY REPORT IL

Wilmington, IL: 16 Violations - Home Safety 77/100

1 ZIP code · 2 water systems · Updated

ZipCheckup grade for Wilmington: B.

This ZIP has a few items worth a quick check.

In the dataset behind this page, Wilmington, IL receives one of the two highest grades; read the compliance history system by system for details.

How Wilmington Compares

Wilmington77/100
Illinois avg68/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
2
Water Systems
1
ZIPs Linked to Systems with Violations
B · 77
Avg Safety Score
Zone 2
County Radon Potential (Moderate)
$225K
Median Home Value
$500
Est. Remediation (0.2% of home value)

Key Facts for Wilmington Residents

  • Your city's water systems recorded 16 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.005 mg/L.
  • Homes built before 1986: 59% - older plumbing may contain lead solder.
  • Estimated remediation: $500 per household.
  • Health risk index (ZipCheckup composite of CDC data): 11.84.

Wilmington's Water Providers

Because each listed system has its own federal record, violations at one of the 2 shown below do not apply to the others among the 2 tied to Wilmington, IL.

  • Braidwood
    Serves ~6,194 people 4 violations
    B
  • Wilmington
    Serves ~5,700 people 12 violations
    B

Overview

We track home safety data for 1 ZIP code in Wilmington, Illinois, covering 2 community water systems serving approximately 11,277 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Home Safety Score

Average Home Safety Score for Wilmington: B (77/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Wilmington water systems draw from: Groundwater, Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0050 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Lead and Copper Rule Revisions Treatment Technique 4 1
Consumer Confidence Rule Reporting 4 1
Public Notice Rule Reporting 4 1
Interim Enhanced Surface Water Treatment Rule Treatment Technique 4 1
Chloramine Disinfectant 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
60481 B 16 0 Wilmington

All ZIP Codes in Wilmington

  • 60481 [B] - 16 violations

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Wilmington Community Health Snapshot

9.7%
Asthma (US: 9.8%)
10.7%
Diabetes (US: 10.4%)
15.7%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9.7% ↓
Diabetes 10.7% ↑
Mental Health 15.7% ↑

Vertical line = national average. ■ Above national · ■ Below national

What's in Wilmington's Water?

Lead and Copper Rule Revisions 4 violations
Treatment Technique
Consumer Confidence Rule 4 violations
Reporting
Public Notice Rule 4 violations
Reporting

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Wilmington Infrastructure Age

1972
Median Build Year
59%
Built Before 1986
37%
Built Before 1970
Copper
Likely Pipe Material

With 59% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Lead can reach tap water from service lines, solder and brass fittings inside a building, which is why housing age draws attention in Wilmington, where the median build year is 1972.

1972
Median Year Built
59%
Pre-1986 (lead solder era; lead paint banned 1978)
37%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (37%) 1970–1986 (22%) Post-1986 (41%)

Over half of homes in Wilmington were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

How Remediation Costs Compare in Wilmington

Measured against the median home value, the estimated cost of fixing the issues flagged for Wilmington lands in the lowest of the three tiers this page uses.

Median Home Value
$224,800
Est. Remediation
$500
Remediation as % of home value 0.2%

Estimated remediation costs in Wilmington can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 22% above the Illinois average.

Wilmington: Lead Risk & Vulnerable Populations

59%
Homes Built Before 1986
0.005
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Wilmington: NFIP Claim Records and Water-Quality Context

408
Total FEMA Flood Claims
$11,005
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Wilmington contains 408 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $11,005. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $500 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Frequently Asked Questions

What does the Home Safety Score mean for Wilmington, IL?
Wilmington has an average Home Safety Score of 77/100 (Grade B) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 16 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Wilmington?
EPA records list 16 EPA violations for Wilmington water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Wilmington water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Wilmington is 0.005 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Wilmington compare to Illinois average?
Wilmington has an average Home Safety Score of 77/100, which is at or above the Illinois state average of 68/100 for the same model series.
How many water systems serve Wilmington?
Our records map 2 water systems to 1 ZIP code in Wilmington. The related population figure in our data is approximately 11,277 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Wilmington?
Estimated remediation cost per household in Wilmington: $500; modeled range $300 to $800. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Wilmington, IL: 16 Violations - Home Safety 77/100. https://zipcheckup.com/cities/il/wilmington/
BibTeX
@misc{zipcheckup-cities-il-wilmington,
  author = {{ZipCheckup}},
  title  = {{Wilmington, IL: 16 Violations - Home Safety 77/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/il/wilmington/}
}

Page version: October 2026.

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